[HBASE-22040] Add mergeRegionsAsync with a List of region names method in AsyncAdmin

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.2.0, 2.3.0
• Component/s: Admin, asyncclient, Client
• Hadoop Flags: Reviewed

Release Note

Add a mergeRegionsAsync(byte[][], boolean) method in the AsyncAdmin interface.

Instead of using assert, now we will throw IllegalArgumentException when you want to merge less than 2 regions at client side. And also, at master side, instead of using assert, now we will throw DoNotRetryIOException if you want merge more than 2 regions, since we only support merging two regions at once for now.

• Assignee: Duo Zhang
• Reporter: Duo Zhang
• Created: 12/Mar/19 09:20
• Updated: 24/Jun/22 19:07
• Resolved: 18/Mar/19 13:26

Description

Although we only support merging two regions until now, but the rpc protocol does support passing more than two regions to master.

So I think we should provide the methods, but need to add comments to say that for now we only support merging two regions so do not try to pass more than two regions.

Issue Links

• relates to: HBASE-23878 Backport HBASE-22040 to branch-2.1
• links to: Review Board